[seth1969]

As title would it be bad for the fans controlling them by voltage instead of pwm?

I bought 7 ek f4 120 er's all of them sounded like a wheel with no oil, a high pitched squeal.

I have one fan left, was messing with the AQ6 and turned it to voltage control and the noise goes.

 

[Gilles3000]

Your fans are defective, contact EK or the vendor for a replacement.

 

[seth1969]

Yeh i sent the 7 back to ocuk and got my cash back, i bought them last september.

So ordered another 1 a couple of weeks ago thinking that 6 months later ek would have sorted them by now.

Had to believe these fans was released for retail sounding like that.

The noise is a very high pitched, think my hearing is sensitive to high freq electronics.

 

[seth1969]

Really struggling to find a near silent fan for use with my rx480's.

Might give the Phanteks PH-F120MP a try.

Spent a shed load of cash on fans and still not found one that's pleasing to the ear and shifts a half decent amount of air.

 

[apw63]

Best fans I've ever owned. Whisper quite even at full speed. I have 11 of these total, 8 on my 3 RADs and 3 for pedestal exhaust.
Noiseblocker NB-Multiframe M12-P 120mmx25mm Ultra Silent PWM Fan - 1000-2000 RPM - 12-29 dBA
I have 4 of these for case exhaust.
Noiseblocker NB-Multiframe M12-PS 120mmx25mm Super Ultra Silent PWM Fan - 600-1500 RPM - 7-23 dBA

I have never heard any high pitched electronic noise from any of the fans.

 

[eleven010]

Quote:

Originally Posted by seth1969

Really struggling to find a near silent fan for use with my rx480's.

Might give the Phanteks PH-F120MP a try.

Spent a shed load of cash on fans and still not found one that's pleasing to the ear and shifts a half decent amount of air.

Give the PWM controlled Darkside Gentle Typhoons a try...I have the regular 2150rpm Tyhpoons and they are awesome for low noise and good flow. I normally run them at about 40% of max rpm and I can barely hear 4 of them on my 480 rad...

 

[TheParisHeaton]

Quote:

Originally Posted by seth1969

Yeh i sent the 7 back to ocuk and got my cash back, i bought them last september.

I bought 7 ek f4 120 er's all of them sounded like a wheel with no oil, a high pitched squeal.
The noise is a very high pitched, think my hearing is sensitive to high freq electronics.

Same here! These fans are terrible (i have EK-Vardar F1-120 (1150rpm)). I plan to replace them in the near future.